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|A 225C Geothermal Logging Tool|
|Keywords: Geothermal, HPHT Logging, SOI|
|Geothermal logging tools are difficult to develop due to sustained high temperature operation. Recent commercial component offerings are significantly altered the high temperature geothermal tool problem. This paper implements a new baseline geothermal tool circuit working with five 225C, SOI components. An example tool including up to four spinners (fluid flow measurement), four analog inputs (for pressure, temperature or other sensors), EEPROM storage (program and data), FSK logic (wireline data transmission), and a high-speed UART (tool communication). Field updates of code and calibration constants are supported. Further, this paper demonstrate how the tool electronics can be expanded for more complex applications such as a geothermal well logging camera.|
|Marshall Soares, President